Alright, let's solve this math problem step by step. First, we have the number 305. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 220. So, we're going to take the number 305 and add it to itself 220 times.
Step 1: 0 + 305 = 305
Step 2: 305 + 305 = 610
Step 3: 610 + 305 = 915
Step 4: 915 + 305 = 1220
Step 5: 1220 + 305 = 1525
Step 6: 1525 + 305 = 1830
Step 7: 1830 + 305 = 2135
Step 8: 2135 + 305 = 2440
Step 9: 2440 + 305 = 2745
Step 10: 2745 + 305 = 3050
Step 11: 3050 + 305 = 3355
Step 12: 3355 + 305 = 3660
Step 13: 3660 + 305 = 3965
Step 14: 3965 + 305 = 4270
Step 15: 4270 + 305 = 4575
Step 16: 4575 + 305 = 4880
Step 17: 4880 + 305 = 5185
Step 18: 5185 + 305 = 5490
Step 19: 5490 + 305 = 5795
Step 20: 5795 + 305 = 6100
Step 21: 6100 + 305 = 6405
Step 22: 6405 + 305 = 6710
Step 23: 6710 + 305 = 7015
Step 24: 7015 + 305 = 7320
Step 25: 7320 + 305 = 7625
Step 26: 7625 + 305 = 7930
Step 27: 7930 + 305 = 8235
Step 28: 8235 + 305 = 8540
Step 29: 8540 + 305 = 8845
Step 30: 8845 + 305 = 9150
Step 31: 9150 + 305 = 9455
Step 32: 9455 + 305 = 9760
Step 33: 9760 + 305 = 10065
Step 34: 10065 + 305 = 10370
Step 35: 10370 + 305 = 10675
Step 36: 10675 + 305 = 10980
Step 37: 10980 + 305 = 11285
Step 38: 11285 + 305 = 11590
Step 39: 11590 + 305 = 11895
Step 40: 11895 + 305 = 12200
Step 41: 12200 + 305 = 12505
Step 42: 12505 + 305 = 12810
Step 43: 12810 + 305 = 13115
Step 44: 13115 + 305 = 13420
Step 45: 13420 + 305 = 13725
Step 46: 13725 + 305 = 14030
Step 47: 14030 + 305 = 14335
Step 48: 14335 + 305 = 14640
Step 49: 14640 + 305 = 14945
Step 50: 14945 + 305 = 15250
Step 51: 15250 + 305 = 15555
Step 52: 15555 + 305 = 15860
Step 53: 15860 + 305 = 16165
Step 54: 16165 + 305 = 16470
Step 55: 16470 + 305 = 16775
Step 56: 16775 + 305 = 17080
Step 57: 17080 + 305 = 17385
Step 58: 17385 + 305 = 17690
Step 59: 17690 + 305 = 17995
Step 60: 17995 + 305 = 18300
Step 61: 18300 + 305 = 18605
Step 62: 18605 + 305 = 18910
Step 63: 18910 + 305 = 19215
Step 64: 19215 + 305 = 19520
Step 65: 19520 + 305 = 19825
Step 66: 19825 + 305 = 20130
Step 67: 20130 + 305 = 20435
Step 68: 20435 + 305 = 20740
Step 69: 20740 + 305 = 21045
Step 70: 21045 + 305 = 21350
Step 71: 21350 + 305 = 21655
Step 72: 21655 + 305 = 21960
Step 73: 21960 + 305 = 22265
Step 74: 22265 + 305 = 22570
Step 75: 22570 + 305 = 22875
Step 76: 22875 + 305 = 23180
Step 77: 23180 + 305 = 23485
Step 78: 23485 + 305 = 23790
Step 79: 23790 + 305 = 24095
Step 80: 24095 + 305 = 24400
Step 81: 24400 + 305 = 24705
Step 82: 24705 + 305 = 25010
Step 83: 25010 + 305 = 25315
Step 84: 25315 + 305 = 25620
Step 85: 25620 + 305 = 25925
Step 86: 25925 + 305 = 26230
Step 87: 26230 + 305 = 26535
Step 88: 26535 + 305 = 26840
Step 89: 26840 + 305 = 27145
Step 90: 27145 + 305 = 27450
Step 91: 27450 + 305 = 27755
Step 92: 27755 + 305 = 28060
Step 93: 28060 + 305 = 28365
Step 94: 28365 + 305 = 28670
Step 95: 28670 + 305 = 28975
Step 96: 28975 + 305 = 29280
Step 97: 29280 + 305 = 29585
Step 98: 29585 + 305 = 29890
Step 99: 29890 + 305 = 30195
Step 100: 30195 + 305 = 30500
Step 101: 30500 + 305 = 30805
Step 102: 30805 + 305 = 31110
Step 103: 31110 + 305 = 31415
Step 104: 31415 + 305 = 31720
Step 105: 31720 + 305 = 32025
Step 106: 32025 + 305 = 32330
Step 107: 32330 + 305 = 32635
Step 108: 32635 + 305 = 32940
Step 109: 32940 + 305 = 33245
Step 110: 33245 + 305 = 33550
Step 111: 33550 + 305 = 33855
Step 112: 33855 + 305 = 34160
Step 113: 34160 + 305 = 34465
Step 114: 34465 + 305 = 34770
Step 115: 34770 + 305 = 35075
Step 116: 35075 + 305 = 35380
Step 117: 35380 + 305 = 35685
Step 118: 35685 + 305 = 35990
Step 119: 35990 + 305 = 36295
Step 120: 36295 + 305 = 36600
Step 121: 36600 + 305 = 36905
Step 122: 36905 + 305 = 37210
Step 123: 37210 + 305 = 37515
Step 124: 37515 + 305 = 37820
Step 125: 37820 + 305 = 38125
Step 126: 38125 + 305 = 38430
Step 127: 38430 + 305 = 38735
Step 128: 38735 + 305 = 39040
Step 129: 39040 + 305 = 39345
Step 130: 39345 + 305 = 39650
Step 131: 39650 + 305 = 39955
Step 132: 39955 + 305 = 40260
Step 133: 40260 + 305 = 40565
Step 134: 40565 + 305 = 40870
Step 135: 40870 + 305 = 41175
Step 136: 41175 + 305 = 41480
Step 137: 41480 + 305 = 41785
Step 138: 41785 + 305 = 42090
Step 139: 42090 + 305 = 42395
Step 140: 42395 + 305 = 42700
Step 141: 42700 + 305 = 43005
Step 142: 43005 + 305 = 43310
Step 143: 43310 + 305 = 43615
Step 144: 43615 + 305 = 43920
Step 145: 43920 + 305 = 44225
Step 146: 44225 + 305 = 44530
Step 147: 44530 + 305 = 44835
Step 148: 44835 + 305 = 45140
Step 149: 45140 + 305 = 45445
Step 150: 45445 + 305 = 45750
Step 151: 45750 + 305 = 46055
Step 152: 46055 + 305 = 46360
Step 153: 46360 + 305 = 46665
Step 154: 46665 + 305 = 46970
Step 155: 46970 + 305 = 47275
Step 156: 47275 + 305 = 47580
Step 157: 47580 + 305 = 47885
Step 158: 47885 + 305 = 48190
Step 159: 48190 + 305 = 48495
Step 160: 48495 + 305 = 48800
Step 161: 48800 + 305 = 49105
Step 162: 49105 + 305 = 49410
Step 163: 49410 + 305 = 49715
Step 164: 49715 + 305 = 50020
Step 165: 50020 + 305 = 50325
Step 166: 50325 + 305 = 50630
Step 167: 50630 + 305 = 50935
Step 168: 50935 + 305 = 51240
Step 169: 51240 + 305 = 51545
Step 170: 51545 + 305 = 51850
Step 171: 51850 + 305 = 52155
Step 172: 52155 + 305 = 52460
Step 173: 52460 + 305 = 52765
Step 174: 52765 + 305 = 53070
Step 175: 53070 + 305 = 53375
Step 176: 53375 + 305 = 53680
Step 177: 53680 + 305 = 53985
Step 178: 53985 + 305 = 54290
Step 179: 54290 + 305 = 54595
Step 180: 54595 + 305 = 54900
Step 181: 54900 + 305 = 55205
Step 182: 55205 + 305 = 55510
Step 183: 55510 + 305 = 55815
Step 184: 55815 + 305 = 56120
Step 185: 56120 + 305 = 56425
Step 186: 56425 + 305 = 56730
Step 187: 56730 + 305 = 57035
Step 188: 57035 + 305 = 57340
Step 189: 57340 + 305 = 57645
Step 190: 57645 + 305 = 57950
Step 191: 57950 + 305 = 58255
Step 192: 58255 + 305 = 58560
Step 193: 58560 + 305 = 58865
Step 194: 58865 + 305 = 59170
Step 195: 59170 + 305 = 59475
Step 196: 59475 + 305 = 59780
Step 197: 59780 + 305 = 60085
Step 198: 60085 + 305 = 60390
Step 199: 60390 + 305 = 60695
Step 200: 60695 + 305 = 61000
Step 201: 61000 + 305 = 61305
Step 202: 61305 + 305 = 61610
Step 203: 61610 + 305 = 61915
Step 204: 61915 + 305 = 62220
Step 205: 62220 + 305 = 62525
Step 206: 62525 + 305 = 62830
Step 207: 62830 + 305 = 63135
Step 208: 63135 + 305 = 63440
Step 209: 63440 + 305 = 63745
Step 210: 63745 + 305 = 64050
Step 211: 64050 + 305 = 64355
Step 212: 64355 + 305 = 64660
Step 213: 64660 + 305 = 64965
Step 214: 64965 + 305 = 65270
Step 215: 65270 + 305 = 65575
Step 216: 65575 + 305 = 65880
Step 217: 65880 + 305 = 66185
Step 218: 66185 + 305 = 66490
Step 219: 66490 + 305 = 66795
Step 220: 66795 + 305 = 67100

So, 305*220 = 67100